1 In Windows 10, the key combination WindowsKey+PrntScrn sends a png picture of your screen to your Screenshots folder. When this happens, the screen momentarily dims slightly to tell you that you are doing it. If your PrntScrn key has two jobs then you may need to press the Fn key as well -> Fn-WinKey-PrntScrn.
Wiktionary (5.00 / 10 votes) Rate this definition: petroleum (Noun). A flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under earth surface. Origin: From petroleum, from petra + oleum.
Petroleum is the substance coming from oilfields, and containing a vast variety of organic substances (hydrocarbons). . Gasoline is a product drawn from petroleum through a refining process. the word petrol and gasoline are exactly the same. Hey, they say colour we say color.